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Working in Comfort
Mice and Other Input Devices
Mice and Other Input Devices
Various aspects of using mice and other input devices may increase your risk
of discomfort or injury. Observing the following recommendations may reduce
that risk.
• Try to keep your hand, wrist, and forearm in a neutral position while using your
mouse or other input device.
• If you use your thumb to rotate the ball on a trackball or spaceball, keep it in a
relaxed, natural shape, and maintain a neutral posture in your hand, wrist, and
forearm.
• Hold the mouse gently by draping your fingers over it. Keep your hand relaxed
and fingers loose. Do not grip the mouse tightly.
• It takes very little pressure or force from your fingers to activate the buttons or
scroll wheel on your mouse, scrolling mouse, trackball, or other input device.
Using too much force can place unnecessary stress on the tendons and muscles
in your hands, wrists, and forearms.
• If you are using a scrolling mouse, be sure to keep your fingers and hand in a
relaxed, neutral position when activating the scroll wheel. Also, this type of
mouse features software that can minimize the number of mouse movements
or button clicks.
• When using a mouse, trackball, or other input device, position it as close to the
keyboard as possible, and keep it at the same level as you do not have to stretch
while using it.
• Use a good quality mouse pad to enable the mouse to work most effectively and
reduce unnecessary hand and wrist movements.
• Be sure to keep your mouse and trackball clean. Regular removal of accumulat-
ed dust and dirt helps ensure proper tracking and reduces unnecessary hand
and wrist motions.
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